function switch_style(title) {
	var c, i, t;
	var doc=document;
	if(!(c = doc.styleSheets)) 
		{return;}
		i = c.length;
		while(i--) {
			if((t = c[i].title)) {
			c[i].disabled = (title != t);
			}
		}
}

function changeTheme(styleSheetTitle,anchorId)
{
	switch_style(styleSheetTitle);
	var doc = document;
	var viewFalshAnchor = doc.getElementById(anchorId);
	switch(styleSheetTitle)
	{
		case 'blue':
			viewFalshAnchor.href = bluePageSrc;
			break;
		case 'bronze':
			viewFalshAnchor.href = bronzePageSrc;
			break;
		case 'silver':
			viewFalshAnchor.href = silverPageSrc;
			break;
		case 'gold':
			viewFalshAnchor.href = goldPageSrc;
			break;
		case 'black':
			viewFalshAnchor.href = blackPageSrc;
			break;

	}
	
	
}